Described is a simple demonstration that relates the techniques of magnetic resonance imaging (MRI) used in medicine and nuclear magnetic resonance (NMR) spectroscopy. Included are materials, procedures, and probable results. (KR)

Described is a demonstration that provides an introduction to nonequilibrium reaction-diffusion systems and the coupling of hydrodynamics to chemical reactions. Experiments that demonstrate autocatalytic behavior that are effected by gravity and convection are included. (KR)

Restructuring demands an organizational and cultural break with the past. Because goals are ambiguous and new roles are required, decision makers must relinquish sequential, goal-driven planning for sustained dialogue, inquiry, and risk taking. Principals enhance the process by educating parents and the community and by establishing a…

Discusses how to build an inexpensive Young's modulus apparatus and also a lens with an adjustable focal length. Describes the demonstration of moving a peeled, hard-boiled egg in and out of a flask whose neck is slightly smaller than the egg. (MVL)

Describes an experiment where students test the furcula or wishbone of a bird for its springlike properties. (PR)

Presents the general theory to explain chemical movement in soil. Describes classroom demonstrations with visually stimulating results that show the effects of soil structure, soil texture, soil pH, and soluble organic matter on that movement. (MDH)

Science fair mentorship programs let students investigate a wide variety of science topics under the guidance of interested community members. These programs enhance the relationships among school, community, and home. (PR)

Describes an investigation in which students predict and verify the effect that the number of clicks of a toy copter gun has on the height that the copter will attain. Provides follow-up questions for the students. (MDH)

Presents an exercise that describes the direct extraction and purification of DNA from a small soil sample. Also discusses the subsequent amplification of a 343-bp Tn7 transposate A gene fragment (tnsA) from a strain of Pseudomonas aureofaciens 3732RNL11. Contains 21 references. (DDR)

Describes the biochemical structure and functions of the enzyme chymosin. Presents activities to familiarize students with fundamental aspects of enzyme-substrate interaction. (WRM)

Presents a procedure for creating a colored superabsorbant polymer gel. Pieces of the gel can be used to demonstrate convection currents in heating water. (WRM)

Describes the Environmental Buddies program designed to pair fourth-grade (mentors) and kindergarten (proteges) children to work on science investigations centered around ecological themes. Details program components, including the following: investigations that interest and challenge both ages, careful student pairing, emphasis on mutual benefits…

Presents a pre-lab exercise, an experimental setup, and discussion of computer-generated graphs that can be used to study the motion and energy of a bouncing ball. (WRM)

Describes the use of two tiny light bulbs and a cloth grating to construct a semiquantitative experiment for determining the wavelength of light from an interference pattern. (WRM)

Describes an Introduction to Chemical Engineering course with particular reference to the development, use, and evaluation of four simple experiments centered around the fundamental principles of heat transfer, mass transfer, reaction kinetics, and momentum transfer. (WRM)